﻿// Formatting library for C++ - color support
//
// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors
// All rights reserved.
//
// For the license information refer to format.h.

#ifndef FMT_COLOR_H_
#define FMT_COLOR_H_

#include "format.h"

FMT_BEGIN_NAMESPACE
FMT_BEGIN_EXPORT

enum class color : uint32_t {
	alice_blue = 0xF0F8FF,               // rgb(240,248,255)
	antique_white = 0xFAEBD7,            // rgb(250,235,215)
	aqua = 0x00FFFF,                     // rgb(0,255,255)
	aquamarine = 0x7FFFD4,               // rgb(127,255,212)
	azure = 0xF0FFFF,                    // rgb(240,255,255)
	beige = 0xF5F5DC,                    // rgb(245,245,220)
	bisque = 0xFFE4C4,                   // rgb(255,228,196)
	black = 0x000000,                    // rgb(0,0,0)
	blanched_almond = 0xFFEBCD,          // rgb(255,235,205)
	blue = 0x0000FF,                     // rgb(0,0,255)
	blue_violet = 0x8A2BE2,              // rgb(138,43,226)
	brown = 0xA52A2A,                    // rgb(165,42,42)
	burly_wood = 0xDEB887,               // rgb(222,184,135)
	cadet_blue = 0x5F9EA0,               // rgb(95,158,160)
	chartreuse = 0x7FFF00,               // rgb(127,255,0)
	chocolate = 0xD2691E,                // rgb(210,105,30)
	coral = 0xFF7F50,                    // rgb(255,127,80)
	cornflower_blue = 0x6495ED,          // rgb(100,149,237)
	cornsilk = 0xFFF8DC,                 // rgb(255,248,220)
	crimson = 0xDC143C,                  // rgb(220,20,60)
	cyan = 0x00FFFF,                     // rgb(0,255,255)
	dark_blue = 0x00008B,                // rgb(0,0,139)
	dark_cyan = 0x008B8B,                // rgb(0,139,139)
	dark_golden_rod = 0xB8860B,          // rgb(184,134,11)
	dark_gray = 0xA9A9A9,                // rgb(169,169,169)
	dark_green = 0x006400,               // rgb(0,100,0)
	dark_khaki = 0xBDB76B,               // rgb(189,183,107)
	dark_magenta = 0x8B008B,             // rgb(139,0,139)
	dark_olive_green = 0x556B2F,         // rgb(85,107,47)
	dark_orange = 0xFF8C00,              // rgb(255,140,0)
	dark_orchid = 0x9932CC,              // rgb(153,50,204)
	dark_red = 0x8B0000,                 // rgb(139,0,0)
	dark_salmon = 0xE9967A,              // rgb(233,150,122)
	dark_sea_green = 0x8FBC8F,           // rgb(143,188,143)
	dark_slate_blue = 0x483D8B,          // rgb(72,61,139)
	dark_slate_gray = 0x2F4F4F,          // rgb(47,79,79)
	dark_turquoise = 0x00CED1,           // rgb(0,206,209)
	dark_violet = 0x9400D3,              // rgb(148,0,211)
	deep_pink = 0xFF1493,                // rgb(255,20,147)
	deep_sky_blue = 0x00BFFF,            // rgb(0,191,255)
	dim_gray = 0x696969,                 // rgb(105,105,105)
	dodger_blue = 0x1E90FF,              // rgb(30,144,255)
	fire_brick = 0xB22222,               // rgb(178,34,34)
	floral_white = 0xFFFAF0,             // rgb(255,250,240)
	forest_green = 0x228B22,             // rgb(34,139,34)
	fuchsia = 0xFF00FF,                  // rgb(255,0,255)
	gainsboro = 0xDCDCDC,                // rgb(220,220,220)
	ghost_white = 0xF8F8FF,              // rgb(248,248,255)
	gold = 0xFFD700,                     // rgb(255,215,0)
	golden_rod = 0xDAA520,               // rgb(218,165,32)
	gray = 0x808080,                     // rgb(128,128,128)
	green = 0x008000,                    // rgb(0,128,0)
	green_yellow = 0xADFF2F,             // rgb(173,255,47)
	honey_dew = 0xF0FFF0,                // rgb(240,255,240)
	hot_pink = 0xFF69B4,                 // rgb(255,105,180)
	indian_red = 0xCD5C5C,               // rgb(205,92,92)
	indigo = 0x4B0082,                   // rgb(75,0,130)
	ivory = 0xFFFFF0,                    // rgb(255,255,240)
	khaki = 0xF0E68C,                    // rgb(240,230,140)
	lavender = 0xE6E6FA,                 // rgb(230,230,250)
	lavender_blush = 0xFFF0F5,           // rgb(255,240,245)
	lawn_green = 0x7CFC00,               // rgb(124,252,0)
	lemon_chiffon = 0xFFFACD,            // rgb(255,250,205)
	light_blue = 0xADD8E6,               // rgb(173,216,230)
	light_coral = 0xF08080,              // rgb(240,128,128)
	light_cyan = 0xE0FFFF,               // rgb(224,255,255)
	light_golden_rod_yellow = 0xFAFAD2,  // rgb(250,250,210)
	light_gray = 0xD3D3D3,               // rgb(211,211,211)
	light_green = 0x90EE90,              // rgb(144,238,144)
	light_pink = 0xFFB6C1,               // rgb(255,182,193)
	light_salmon = 0xFFA07A,             // rgb(255,160,122)
	light_sea_green = 0x20B2AA,          // rgb(32,178,170)
	light_sky_blue = 0x87CEFA,           // rgb(135,206,250)
	light_slate_gray = 0x778899,         // rgb(119,136,153)
	light_steel_blue = 0xB0C4DE,         // rgb(176,196,222)
	light_yellow = 0xFFFFE0,             // rgb(255,255,224)
	lime = 0x00FF00,                     // rgb(0,255,0)
	lime_green = 0x32CD32,               // rgb(50,205,50)
	linen = 0xFAF0E6,                    // rgb(250,240,230)
	magenta = 0xFF00FF,                  // rgb(255,0,255)
	maroon = 0x800000,                   // rgb(128,0,0)
	medium_aquamarine = 0x66CDAA,        // rgb(102,205,170)
	medium_blue = 0x0000CD,              // rgb(0,0,205)
	medium_orchid = 0xBA55D3,            // rgb(186,85,211)
	medium_purple = 0x9370DB,            // rgb(147,112,219)
	medium_sea_green = 0x3CB371,         // rgb(60,179,113)
	medium_slate_blue = 0x7B68EE,        // rgb(123,104,238)
	medium_spring_green = 0x00FA9A,      // rgb(0,250,154)
	medium_turquoise = 0x48D1CC,         // rgb(72,209,204)
	medium_violet_red = 0xC71585,        // rgb(199,21,133)
	midnight_blue = 0x191970,            // rgb(25,25,112)
	mint_cream = 0xF5FFFA,               // rgb(245,255,250)
	misty_rose = 0xFFE4E1,               // rgb(255,228,225)
	moccasin = 0xFFE4B5,                 // rgb(255,228,181)
	navajo_white = 0xFFDEAD,             // rgb(255,222,173)
	navy = 0x000080,                     // rgb(0,0,128)
	old_lace = 0xFDF5E6,                 // rgb(253,245,230)
	olive = 0x808000,                    // rgb(128,128,0)
	olive_drab = 0x6B8E23,               // rgb(107,142,35)
	orange = 0xFFA500,                   // rgb(255,165,0)
	orange_red = 0xFF4500,               // rgb(255,69,0)
	orchid = 0xDA70D6,                   // rgb(218,112,214)
	pale_golden_rod = 0xEEE8AA,          // rgb(238,232,170)
	pale_green = 0x98FB98,               // rgb(152,251,152)
	pale_turquoise = 0xAFEEEE,           // rgb(175,238,238)
	pale_violet_red = 0xDB7093,          // rgb(219,112,147)
	papaya_whip = 0xFFEFD5,              // rgb(255,239,213)
	peach_puff = 0xFFDAB9,               // rgb(255,218,185)
	peru = 0xCD853F,                     // rgb(205,133,63)
	pink = 0xFFC0CB,                     // rgb(255,192,203)
	plum = 0xDDA0DD,                     // rgb(221,160,221)
	powder_blue = 0xB0E0E6,              // rgb(176,224,230)
	purple = 0x800080,                   // rgb(128,0,128)
	rebecca_purple = 0x663399,           // rgb(102,51,153)
	red = 0xFF0000,                      // rgb(255,0,0)
	rosy_brown = 0xBC8F8F,               // rgb(188,143,143)
	royal_blue = 0x4169E1,               // rgb(65,105,225)
	saddle_brown = 0x8B4513,             // rgb(139,69,19)
	salmon = 0xFA8072,                   // rgb(250,128,114)
	sandy_brown = 0xF4A460,              // rgb(244,164,96)
	sea_green = 0x2E8B57,                // rgb(46,139,87)
	sea_shell = 0xFFF5EE,                // rgb(255,245,238)
	sienna = 0xA0522D,                   // rgb(160,82,45)
	silver = 0xC0C0C0,                   // rgb(192,192,192)
	sky_blue = 0x87CEEB,                 // rgb(135,206,235)
	slate_blue = 0x6A5ACD,               // rgb(106,90,205)
	slate_gray = 0x708090,               // rgb(112,128,144)
	snow = 0xFFFAFA,                     // rgb(255,250,250)
	spring_green = 0x00FF7F,             // rgb(0,255,127)
	steel_blue = 0x4682B4,               // rgb(70,130,180)
	tan = 0xD2B48C,                      // rgb(210,180,140)
	teal = 0x008080,                     // rgb(0,128,128)
	thistle = 0xD8BFD8,                  // rgb(216,191,216)
	tomato = 0xFF6347,                   // rgb(255,99,71)
	turquoise = 0x40E0D0,                // rgb(64,224,208)
	violet = 0xEE82EE,                   // rgb(238,130,238)
	wheat = 0xF5DEB3,                    // rgb(245,222,179)
	white = 0xFFFFFF,                    // rgb(255,255,255)
	white_smoke = 0xF5F5F5,              // rgb(245,245,245)
	yellow = 0xFFFF00,                   // rgb(255,255,0)
	yellow_green = 0x9ACD32              // rgb(154,205,50)
};                                     // enum class color

enum class terminal_color : uint8_t {
	black = 30,
	red,
	green,
	yellow,
	blue,
	magenta,
	cyan,
	white,
	bright_black = 90,
	bright_red,
	bright_green,
	bright_yellow,
	bright_blue,
	bright_magenta,
	bright_cyan,
	bright_white
};

enum class emphasis : uint8_t {
	bold = 1,
	faint = 1 << 1,
	italic = 1 << 2,
	underline = 1 << 3,
	blink = 1 << 4,
	reverse = 1 << 5,
	conceal = 1 << 6,
	strikethrough = 1 << 7,
};

// rgb is a struct for red, green and blue colors.
// Using the name "rgb" makes some editors show the color in a tooltip.
struct rgb {
	FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {}
	FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
	FMT_CONSTEXPR rgb(uint32_t hex)
		: r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
	FMT_CONSTEXPR rgb(color hex)
		: r((uint32_t(hex) >> 16) & 0xFF),
		g((uint32_t(hex) >> 8) & 0xFF),
		b(uint32_t(hex) & 0xFF) {}
	uint8_t r;
	uint8_t g;
	uint8_t b;
};

namespace detail {

	// color is a struct of either a rgb color or a terminal color.
	struct color_type {
		FMT_CONSTEXPR color_type() noexcept : is_rgb(), value{} {}
		FMT_CONSTEXPR color_type(color rgb_color) noexcept : is_rgb(true), value{} {
			value.rgb_color = static_cast<uint32_t>(rgb_color);
		}
		FMT_CONSTEXPR color_type(rgb rgb_color) noexcept : is_rgb(true), value{} {
			value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) |
				(static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
		}
		FMT_CONSTEXPR color_type(terminal_color term_color) noexcept
			: is_rgb(), value{} {
			value.term_color = static_cast<uint8_t>(term_color);
		}
		bool is_rgb;
		union color_union {
			uint8_t term_color;
			uint32_t rgb_color;
		} value;
	};
}  // namespace detail

/// A text style consisting of foreground and background colors and emphasis.
class text_style {
public:
	FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
		: set_foreground_color(), set_background_color(), ems(em) {}

	FMT_CONSTEXPR auto operator|=(const text_style& rhs) -> text_style& {
		if (!set_foreground_color) {
			set_foreground_color = rhs.set_foreground_color;
			foreground_color = rhs.foreground_color;
		}
		else if (rhs.set_foreground_color) {
			if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
				report_error("can't OR a terminal color");
			foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
		}

		if (!set_background_color) {
			set_background_color = rhs.set_background_color;
			background_color = rhs.background_color;
		}
		else if (rhs.set_background_color) {
			if (!background_color.is_rgb || !rhs.background_color.is_rgb)
				report_error("can't OR a terminal color");
			background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
		}

		ems = static_cast<emphasis>(static_cast<uint8_t>(ems) |
			static_cast<uint8_t>(rhs.ems));
		return *this;
	}

	friend FMT_CONSTEXPR auto operator|(text_style lhs, const text_style& rhs)
		-> text_style {
		return lhs |= rhs;
	}

	FMT_CONSTEXPR auto has_foreground() const noexcept -> bool {
		return set_foreground_color;
	}
	FMT_CONSTEXPR auto has_background() const noexcept -> bool {
		return set_background_color;
	}
	FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool {
		return static_cast<uint8_t>(ems) != 0;
	}
	FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type {
		FMT_ASSERT(has_foreground(), "no foreground specified for this style");
		return foreground_color;
	}
	FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type {
		FMT_ASSERT(has_background(), "no background specified for this style");
		return background_color;
	}
	FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis {
		FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
		return ems;
	}

private:
	FMT_CONSTEXPR text_style(bool is_foreground,
		detail::color_type text_color) noexcept
		: set_foreground_color(), set_background_color(), ems() {
		if (is_foreground) {
			foreground_color = text_color;
			set_foreground_color = true;
		}
		else {
			background_color = text_color;
			set_background_color = true;
		}
	}

	friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept
		-> text_style;

	friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept
		-> text_style;

	detail::color_type foreground_color;
	detail::color_type background_color;
	bool set_foreground_color;
	bool set_background_color;
	emphasis ems;
};

/// Creates a text style from the foreground (text) color.
FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
-> text_style {
	return text_style(true, foreground);
}

/// Creates a text style from the background color.
FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
-> text_style {
	return text_style(false, background);
}

FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
-> text_style {
	return text_style(lhs) | rhs;
}

namespace detail {

	template <typename Char> struct ansi_color_escape {
		FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color,
			const char* esc) noexcept {
			// If we have a terminal color, we need to output another escape code
			// sequence.
			if (!text_color.is_rgb) {
				bool is_background = esc == string_view("\x1b[48;2;");
				uint32_t value = text_color.value.term_color;
				// Background ASCII codes are the same as the foreground ones but with
				// 10 more.
				if (is_background) value += 10u;

				size_t index = 0;
				buffer[index++] = static_cast<Char>('\x1b');
				buffer[index++] = static_cast<Char>('[');

				if (value >= 100u) {
					buffer[index++] = static_cast<Char>('1');
					value %= 100u;
				}
				buffer[index++] = static_cast<Char>('0' + value / 10u);
				buffer[index++] = static_cast<Char>('0' + value % 10u);

				buffer[index++] = static_cast<Char>('m');
				buffer[index++] = static_cast<Char>('\0');
				return;
			}

			for (int i = 0; i < 7; i++) {
				buffer[i] = static_cast<Char>(esc[i]);
			}
			rgb color(text_color.value.rgb_color);
			to_esc(color.r, buffer + 7, ';');
			to_esc(color.g, buffer + 11, ';');
			to_esc(color.b, buffer + 15, 'm');
			buffer[19] = static_cast<Char>(0);
		}
		FMT_CONSTEXPR ansi_color_escape(emphasis em) noexcept {
			uint8_t em_codes[num_emphases] = {};
			if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1;
			if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2;
			if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3;
			if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4;
			if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5;
			if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7;
			if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8;
			if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9;

			size_t index = 0;
			for (size_t i = 0; i < num_emphases; ++i) {
				if (!em_codes[i]) continue;
				buffer[index++] = static_cast<Char>('\x1b');
				buffer[index++] = static_cast<Char>('[');
				buffer[index++] = static_cast<Char>('0' + em_codes[i]);
				buffer[index++] = static_cast<Char>('m');
			}
			buffer[index++] = static_cast<Char>(0);
		}
		FMT_CONSTEXPR operator const Char* () const noexcept { return buffer; }

		FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; }
		FMT_CONSTEXPR20 auto end() const noexcept -> const Char* {
			return buffer + basic_string_view<Char>(buffer).size();
		}

	private:
		static constexpr size_t num_emphases = 8;
		Char buffer[7u + 3u * num_emphases + 1u];

		static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out,
			char delimiter) noexcept {
			out[0] = static_cast<Char>('0' + c / 100);
			out[1] = static_cast<Char>('0' + c / 10 % 10);
			out[2] = static_cast<Char>('0' + c % 10);
			out[3] = static_cast<Char>(delimiter);
		}
		static FMT_CONSTEXPR auto has_emphasis(emphasis em, emphasis mask) noexcept
			-> bool {
			return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask);
		}
	};

	template <typename Char>
	FMT_CONSTEXPR auto make_foreground_color(detail::color_type foreground) noexcept
		-> ansi_color_escape<Char> {
		return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
	}

	template <typename Char>
	FMT_CONSTEXPR auto make_background_color(detail::color_type background) noexcept
		-> ansi_color_escape<Char> {
		return ansi_color_escape<Char>(background, "\x1b[48;2;");
	}

	template <typename Char>
	FMT_CONSTEXPR auto make_emphasis(emphasis em) noexcept
		-> ansi_color_escape<Char> {
		return ansi_color_escape<Char>(em);
	}

	template <typename Char> inline void reset_color(buffer<Char>& buffer) {
		auto reset_color = string_view("\x1b[0m");
		buffer.append(reset_color.begin(), reset_color.end());
	}

	template <typename T> struct styled_arg : detail::view {
		const T& value;
		text_style style;
		styled_arg(const T& v, text_style s) : value(v), style(s) {}
	};

	template <typename Char>
	void vformat_to(
		buffer<Char>& buf, const text_style& ts, basic_string_view<Char> format_str,
		basic_format_args<buffered_context<type_identity_t<Char>>> args) {
		bool has_style = false;
		if (ts.has_emphasis()) {
			has_style = true;
			auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
			buf.append(emphasis.begin(), emphasis.end());
		}
		if (ts.has_foreground()) {
			has_style = true;
			auto foreground = detail::make_foreground_color<Char>(ts.get_foreground());
			buf.append(foreground.begin(), foreground.end());
		}
		if (ts.has_background()) {
			has_style = true;
			auto background = detail::make_background_color<Char>(ts.get_background());
			buf.append(background.begin(), background.end());
		}
		detail::vformat_to(buf, format_str, args, {});
		if (has_style) detail::reset_color<Char>(buf);
	}

}  // namespace detail

inline void vprint(FILE* f, const text_style& ts, string_view fmt,
	format_args args) {
	auto buf = memory_buffer();
	detail::vformat_to(buf, ts, fmt, args);
	print(f, FMT_STRING("{}"), string_view(buf.begin(), buf.size()));
}

/**
 * Formats a string and prints it to the specified file stream using ANSI
 * escape sequences to specify text formatting.
 *
 * **Example**:
 *
 *     fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
 *                "Elapsed time: {0:.2f} seconds", 1.23);
 */
template <typename... T>
void print(FILE* f, const text_style& ts, format_string<T...> fmt,
	T&&... args) {
	vprint(f, ts, fmt, fmt::make_format_args(args...));
}

/**
 * Formats a string and prints it to stdout using ANSI escape sequences to
 * specify text formatting.
 *
 * **Example**:
 *
 *     fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
 *                "Elapsed time: {0:.2f} seconds", 1.23);
 */
template <typename... T>
void print(const text_style& ts, format_string<T...> fmt, T&&... args) {
	return print(stdout, ts, fmt, std::forward<T>(args)...);
}

inline auto vformat(const text_style& ts, string_view fmt, format_args args)
-> std::string {
	auto buf = memory_buffer();
	detail::vformat_to(buf, ts, fmt, args);
	return fmt::to_string(buf);
}

/**
 * Formats arguments and returns the result as a string using ANSI escape
 * sequences to specify text formatting.
 *
 * **Example**:
 *
 * ```
 * #include <fmt/color.h>
 * std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
 *                                   "The answer is {}", 42);
 * ```
 */
template <typename... T>
inline auto format(const text_style& ts, format_string<T...> fmt, T&&... args)
-> std::string {
	return fmt::vformat(ts, fmt, fmt::make_format_args(args...));
}

/// Formats a string with the given text_style and writes the output to `out`.
template <typename OutputIt,
	FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
auto vformat_to(OutputIt out, const text_style& ts, string_view fmt,
	format_args args) -> OutputIt {
	auto&& buf = detail::get_buffer<char>(out);
	detail::vformat_to(buf, ts, fmt, args);
	return detail::get_iterator(buf, out);
}

/**
 * Formats arguments with the given text style, writes the result to the output
 * iterator `out` and returns the iterator past the end of the output range.
 *
 * **Example**:
 *
 *     std::vector<char> out;
 *     fmt::format_to(std::back_inserter(out),
 *                    fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
 */
template <typename OutputIt, typename... T,
	FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
inline auto format_to(OutputIt out, const text_style& ts,
	format_string<T...> fmt, T&&... args) -> OutputIt {
	return vformat_to(out, ts, fmt, fmt::make_format_args(args...));
}

template <typename T, typename Char>
struct formatter<detail::styled_arg<T>, Char> : formatter<T, Char> {
	template <typename FormatContext>
	auto format(const detail::styled_arg<T>& arg, FormatContext& ctx) const
		-> decltype(ctx.out()) {
		const auto& ts = arg.style;
		const auto& value = arg.value;
		auto out = ctx.out();

		bool has_style = false;
		if (ts.has_emphasis()) {
			has_style = true;
			auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
			out = std::copy(emphasis.begin(), emphasis.end(), out);
		}
		if (ts.has_foreground()) {
			has_style = true;
			auto foreground =
				detail::make_foreground_color<Char>(ts.get_foreground());
			out = std::copy(foreground.begin(), foreground.end(), out);
		}
		if (ts.has_background()) {
			has_style = true;
			auto background =
				detail::make_background_color<Char>(ts.get_background());
			out = std::copy(background.begin(), background.end(), out);
		}
		out = formatter<T, Char>::format(value, ctx);
		if (has_style) {
			auto reset_color = string_view("\x1b[0m");
			out = std::copy(reset_color.begin(), reset_color.end(), out);
		}
		return out;
	}
};

/**
 * Returns an argument that will be formatted using ANSI escape sequences,
 * to be used in a formatting function.
 *
 * **Example**:
 *
 *     fmt::print("Elapsed time: {0:.2f} seconds",
 *                fmt::styled(1.23, fmt::fg(fmt::color::green) |
 *                                  fmt::bg(fmt::color::blue)));
 */
template <typename T>
FMT_CONSTEXPR auto styled(const T& value, text_style ts)
-> detail::styled_arg<remove_cvref_t<T>> {
	return detail::styled_arg<remove_cvref_t<T>>{value, ts};
}

FMT_END_EXPORT
FMT_END_NAMESPACE

#endif  // FMT_COLOR_H_
